So basically on the right we have a thingie that drops the blue orb in the hole and waits for it to come back. On the left we have a rotating arm on a loop of 5, an arm on a loop of 11, and a rotating arm on a loop of 13, all required to move the blue orb with exact timing back into the hole or else a different arm will put it in the certain spot at the top giving us 5*6(from arm 10's rotation)*11*13=once in every 4290 cycles that the orb can go back into the hole. Once the orb goes in the hole the other orbs are finally moved off the input and worked to the output, while the 4290 cycle requirement starts over.