C111123313331323113313331333133313121111133112111133132233133313133313123232321   >>    C11112331333132311331333133313331312111113311211113313223313331313331312323232   <<    C111123313331323113313331333133313121111133112111133132233133313133313123232323   >>      C111123313331323113313331333133313121111133112111133132233133313133313123232322   >>