C31232233133313221211113313331333132313232233133313113313233231311211   >>    C3123223313331322121111331333133313231323223313331311331323323131121   <<    C31232233133313221211113313331333132313232233133313113313233231311213   >>      C31232233133313221211113313331333132313232233133313113313233231311212   >>