C1111233131211111211113313331333133112323131211113313113313132233132322321   >>    C111123313121111121111331333133313311232313121111331311331313223313232232   <<    C1111233131211111211113313331333133112323131211113313113313132233132322323   >>      C1111233131211111211113313331333133112323131211113313113313132233132322322   >>