; 1
group = 1,3
channel => 1-15
channel => 17-31

; 2
group = 1,4
channel => 32-46
channel => 48-62

; 3
group = 1,2,5
channel => 63-77
channel => 79-93

; 4
group = 1,2,6
channel => 94-108
channel => 110-124