bash enquiry

hdmi_mode	Resolution	Frequency	Screen Aspect	Notes
1	VGA (640×480)	60Hz	4:3
2	480p	60Hz	4:3
3	480p	60Hz	16:9
4	720p	60Hz	16:9
5	1080i	60Hz	16:9
6	480i	60Hz	4:3
7	480i	60Hz	16:9
8	240p	60Hz	4:3
9	240p	60Hz	16:9
10	480i	60Hz	4:3	pixel quadrupling
11	480i	60Hz	16:9	pixel quadrupling
12	240p	60Hz	4:3	pixel quadrupling
13	240p	60Hz	16:9	pixel quadrupling
14	480p	60Hz	4:3	pixel doubling
15	480p	60Hz	16:9	pixel doubling
16	1080p	60Hz	16:9
17	576p	50Hz	4:3
18	576p	50Hz	16:9
19	720p	50Hz	16:9
20	1080i	50Hz	16:9
21	576i	50Hz	4:3
22	576i	50Hz	16:9
23	288p	50Hz	4:3
24	288p	50Hz	16:9
25	576i	50Hz	4:3	pixel quadrupling
26	576i	50Hz	16:9	pixel quadrupling
27	288p	50Hz	4:3	pixel quadrupling
28	288p	50Hz	16:9	pixel quadrupling
29	576p	50Hz	4:3	pixel doubling
30	576p	50Hz	16:9	pixel doubling
31	1080p	50Hz	16:9
32	1080p	24Hz	16:9
33	1080p	25Hz	16:9
34	1080p	30Hz	16:9
35	480p	60Hz	4:3	pixel quadrupling
36	480p	60Hz	16:9	pixel quadrupling
37	576p	50Hz	4:3	pixel quadrupling
38	576p	50Hz	16:9	pixel quadrupling
39	1080i	50Hz	16:9	reduced blanking
40	1080i	100Hz	16:9
41	720p	100Hz	16:9
42	576p	100Hz	4:3
43	576p	100Hz	16:9
44	576i	100Hz	4:3
45	576i	100Hz	16:9
46	1080i	120Hz	16:9
47	720p	120Hz	16:9
48	480p	120Hz	4:3
49	480p	120Hz	16:9
50	480i	120Hz	4:3
51	480i	120Hz	16:9
52	576p	200Hz	4:3
53	576p	200Hz	16:9
54	576i	200Hz	4:3
55	576i	200Hz	16:9
56	480p	240Hz	4:3
57	480p	240Hz	16:9
58	480i	240Hz	4:3
59	480i	240Hz	16:9
60	720p	24Hz	16:9
61	720p	25Hz	16:9
62	720p	30Hz	16:9
63	1080p	120Hz	16:9
64	1080p	100Hz	16:9
65	Custom
66	720p	25Hz	64:27	Pi 4
67	720p	30Hz	64:27	Pi 4
68	720p	50Hz	64:27	Pi 4
69	720p	60Hz	64:27	Pi 4
70	720p	100Hz	64:27	Pi 4
71	720p	120Hz	64:27	Pi 4
72	1080p	24Hz	64:27	Pi 4
73	1080p	25Hz	64:27	Pi 4
74	1080p	30Hz	64:27	Pi 4
75	1080p	50Hz	64:27	Pi 4
76	1080p	60Hz	64:27	Pi 4
77	1080p	100Hz	64:27	Pi 4
78	1080p	120Hz	64:27	Pi 4
79	1680×720	24Hz	64:27	Pi 4
80	1680×720	25z	64:27	Pi 4
81	1680×720	30Hz	64:27	Pi 4
82	1680×720	50Hz	64:27	Pi 4
83	1680×720	60Hz	64:27	Pi 4
84	1680×720	100Hz	64:27	Pi 4
85	1680×720	120Hz	64:27	Pi 4
86	2560×720	24Hz	64:27	Pi 4
87	2560×720	25Hz	64:27	Pi 4
88	2560×720	30Hz	64:27	Pi 4
89	2560×720	50Hz	64:27	Pi 4
90	2560×720	60Hz	64:27	Pi 4
91	2560×720	100Hz	64:27	Pi 4
92	2560×720	120Hz	64:27	Pi 4
93	2160p	24Hz	16:9	Pi 4
94	2160p	25Hz	16:9	Pi 4
95	2160p	30Hz	16:9	Pi 4
96	2160p	50Hz	16:9	Pi 4
97	2160p	60Hz	16:9	Pi 4
98	4096×2160	24Hz	256:135	Pi 4
99	4096×2160	25Hz	256:135	Pi 4
100	4096×2160	30Hz	256:135	Pi 4
101	4096×2160	50Hz	256:135	Pi 4
102	4096×2160	60Hz	256:135	Pi 4
103	2160p	24Hz	64:27	Pi 4
104	2160p	25Hz	64:27	Pi 4
105	2160p	30Hz	64:27	Pi 4
106	2160p	50Hz	64:27	Pi 4
107	2160p	60Hz	64:27	Pi 4

When hdmi_group=2:

hdmi_mode	Resolution	Frequency	Screen Aspect	Notes
1	640×350	85Hz
2	640×400	85Hz	16:10
3	720×400	85Hz
4	640×480	60Hz	4:3
5	640×480	72Hz	4:3
6	640×480	75Hz	4:3
7	640×480	85Hz	4:3
8	800×600	56Hz	4:3
9	800×600	60Hz	4:3
10	800×600	72Hz	4:3
11	800×600	75Hz	4:3
12	800×600	85Hz	4:3
13	800×600	120Hz	4:3
14	848×480	60Hz	16:9
15	1024×768	43Hz	4:3	incompatible with the Raspberry Pi
16	1024×768	60Hz	4:3
17	1024×768	70Hz	4:3
18	1024×768	75Hz	4:3
19	1024×768	85Hz	4:3
20	1024×768	120Hz	4:3
21	1152×864	75Hz	4:3
22	1280×768	60Hz	15:9	reduced blanking
23	1280×768	60Hz	15:9
24	1280×768	75Hz	15:9
25	1280×768	85Hz	15:9
26	1280×768	120Hz	15:9	reduced blanking
27	1280×800	60	16:10	reduced blanking
28	1280×800	60Hz	16:10
29	1280×800	75Hz	16:10
30	1280×800	85Hz	16:10
31	1280×800	120Hz	16:10	reduced blanking
32	1280×960	60Hz	4:3
33	1280×960	85Hz	4:3
34	1280×960	120Hz	4:3	reduced blanking
35	1280×1024	60Hz	5:4
36	1280×1024	75Hz	5:4
37	1280×1024	85Hz	5:4
38	1280×1024	120Hz	5:4	reduced blanking
39	1360×768	60Hz	16:9
40	1360×768	120Hz	16:9	reduced blanking
41	1400×1050	60Hz	4:3	reduced blanking
42	1400×1050	60Hz	4:3
43	1400×1050	75Hz	4:3
44	1400×1050	85Hz	4:3
45	1400×1050	120Hz	4:3	reduced blanking
46	1440×900	60Hz	16:10	reduced blanking
47	1440×900	60Hz	16:10
48	1440×900	75Hz	16:10
49	1440×900	85Hz	16:10
50	1440×900	120Hz	16:10	reduced blanking
51	1600×1200	60Hz	4:3
52	1600×1200	65Hz	4:3
53	1600×1200	70Hz	4:3
54	1600×1200	75Hz	4:3
55	1600×1200	85Hz	4:3
56	1600×1200	120Hz	4:3	reduced blanking
57	1680×1050	60Hz	16:10	reduced blanking
58	1680×1050	60Hz	16:10
59	1680×1050	75Hz	16:10
60	1680×1050	85Hz	16:10
61	1680×1050	120Hz	16:10	reduced blanking
62	1792×1344	60Hz	4:3
63	1792×1344	75Hz	4:3
64	1792×1344	120Hz	4:3	reduced blanking
65	1856×1392	60Hz	4:3
66	1856×1392	75Hz	4:3
67	1856×1392	120Hz	4:3	reduced blanking
68	1920×1200	60Hz	16:10	reduced blanking
69	1920×1200	60Hz	16:10
70	1920×1200	75Hz	16:10
71	1920×1200	85Hz	16:10
72	1920×1200	120Hz	16:10	reduced blanking
73	1920×1440	60Hz	4:3
74	1920×1440	75Hz	4:3
75	1920×1440	120Hz	4:3	reduced blanking
76	2560×1600	60Hz	16:10	reduced blanking
77	2560×1600	60Hz	16:10
78	2560×1600	75Hz	16:10
79	2560×1600	85Hz	16:10
80	2560×1600	120Hz	16:10	reduced blanking
81	1366×768	60Hz	16:9	NOT on Pi4
82	1920×1080	60Hz	16:9	1080p
83	1600×900	60Hz	16:9	reduced blanking
84	2048×1152	60Hz	16:9	reduced blanking
85	1280×720	60Hz	16:9	720p
86	1366×768	60Hz	16:9	reduced blanking