C1111121111331311211331333133313231333132212111113331333112323231   >>    C111112111133131121133133313331323133313221211111333133311232323   <<    C1111121111331311211331333133313231333132212111113331333112323233   >>      C1111121111331311211331333133313231333132212111113331333112323232   >>