C1111133313331323223313331333133313311211111211331323133112121231   >>    C111113331333132322331333133313331331121111121133132313311212123   <<    C1111133313331323223313331333133313311211111211331323133112121233   >>      C1111133313331323223313331333133313311211111211331323133112121232   >>