C3132121111133313233121111331333133313331322331333132212131123231   >>    C313212111113331323312111133133313331333132233133313221213112323   <<    C3132121111133313233121111331333133313331322331333132212131123233   >>      C3132121111133313233121111331333133313331322331333132212131123232   >>