Classic_Hex_Shape_Init_Stacker_12_belt_output

In principle, it is 7 of the same module placed mostly in sequence, but only exactly 1 pair of the 7 are actually identical. Counting individual layers instead of modules, it's 18 sections as the middle layer of the last 3 are not used. Note that on the input only 6 shapes get received so the output is only 6 belts, but that the output is capable of 12 in the case of overflow protection. Trash at the end can be replaced with layer mixing as desired.