ColumnCubes CE+CEThree 3x3x3 connected to each other to implement three different subgroups.
ColumnCubes E+EThree 3x3x3's "siamesed" with the help of 2 throughgoing edge-blocks.
ComGenex Cube Combinatorial chemsitry training tool and promotional item
Combinescion - Champ A puzzle preceding Enigma with an equivalent mechanism. This one features four different generic athletes.
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