C31232233133313221211113313331333133313331212111133133313231312312121   >>    C3123223313331322121111331333133313331333121211113313331323131231212   <<    C31232233133313221211113313331333133313331212111133133313231312312123   >>      C31232233133313221211113313331333133313331212111133133313231312312122   >>