C1111233131211111211113313331323133313331333133313231311232111133133313132231   >>    C111123313121111121111331333132313331333133313331323131123211113313331313223   <<    C1111233131211111211113313331323133313331333133313231311232111133133313132233   >>      C1111233131211111211113313331323133313331333133313231311232111133133313132232   >>