Alternating Triangles

Four Person, 12 Clubs

A - Feeder
B - Sub-Feeder
C - Feedee (To the right of Feeder)
D - Feedee (To the left of Feeder

     B
D       C
     A

A - CSDS ( A right-handed two-count alternating with C and D )
B - ASAS ( A right-handed two-count always passing to A )
C - BSSS ( A right-handed four-count always passing to B )
D - SSBS ( A right-handed four-count, starting with a self, always passing to B )