Voluntary task switching double registration

Coding
1

Hello. Does anyone know the code for voluntary task switching double registration? I need to link a first answer with a second answer; both with 2 correct answer possibilities.

for example 1A
The first choice is letter or number
the second choice is odd / even or vowel / consonant
Thanks

2

If they always respond in the same order then in Builder the easiest option would be to have two routines.