C31232233133313221211113313331333133313332213121111113313113313321   >>    C3123223313331322121111331333133313331333221312111111331311331332   <<    C31232233133313221211113313331333133313332213121111113313113313323   >>      C31232233133313221211113313331333133313332213121111113313113313322   >>