C1111133313331323223313331333133313311211111211331333133313233313332311231   >>    C111113331333132322331333133313331331121111121133133313331323331333231123   <<    C1111133313331323223313331333133313311211111211331333133313233313332311233   >>      C1111133313331323223313331333133313311211111211331333133313233313332311232   >>