C312312111111331312111133133313331322331333133313331322231312231   >>    C31231211111133131211113313331333132233133313331333132223131223   <<    C312312111111331312111133133313331322331333133313331322231312233   >>      C312312111111331312111133133313331322331333133313331322231312232   >>