C1111133313331323223313331333133313331322133313331323221211113313231231231   >>    C111113331333132322331333133313331333132213331333132322121111331323123123   <<    C1111133313331323223313331333133313331322133313331323221211113313231231233   >>      C1111133313331323223313331333133313331322133313331323221211113313231231232   >>