C31232233133313221211113313331333133313331212111133112113313231311   >>    C3123223313331322121111331333133313331333121211113311211331323131   <<    C31232233133313221211113313331333133313331212111133112113313231313   >>      C31232233133313221211113313331333133313331212111133112113313231312   >>