C31232233133313221211113313331333133313311211231211113313113313231333132332211   >>    C3123223313331322121111331333133313331331121123121111331311331323133313233221   <<    C31232233133313221211113313331333133313311211231211113313113313231333132332213   >>      C31232233133313221211113313331333133313311211231211113313113313231333132332212   >>