C1111133313331323223313331333133313331323131211113313133313231231   >>    C111113331333132322331333133313331333132313121111331313331323123   <<    C1111133313331323223313331333133313331323131211113313133313231233   >>      C1111133313331323223313331333133313331323131211113313133313231232   >>