Part number for double injection and assemblies

[Magnus Forsberg]

how to number the top and bottom part of the Animal clam

IMO it should be made regular subparts

how to number the assemblies of the closed and opened version

Today I would give them a suffix -f1; 'partnumber'-f1 , 'partnumber'-f2. It's the same part, but in two different states.

double injection: how do we number them?

I think the p-suffix is the best here, if not the correct lego design ID is known.

Examples:
Rock 4x4x1.333 and Rock 4x4x1.667
Plate 1x2 with rubber tip, 61406p01 ....
BURP 6083p01, 6082p01