tri-sequentigram template:

--------------------------
alpha = A...B...C
omega = D...E...F

L1 = A...B...C
L2 = rand[rand(A, D)...B...C, A...rand(B, E)...C, A...B...rand(C, F)]
check = used(D, E, F)
col = index(check)
new omega set = D, E, F - check ---->transform--> ohm = G...H
L3 = if index <> col{rand[rand(A, ohm())...B...C, A...rand(B, ohm())...C, A...B...rand(C, ohm())]}
check = used(G, H)
col = index(check)
new omega set = D, E, F - check ---->transform--> omega = G...H
L4 = D...E...F
write:
L1
L2
L3
L4
closure