C11112331312111112111133133313331312111111322331333133313221221   >>    C1111233131211111211113313331333131211111132233133313331322122   <<    C11112331312111112111133133313331312111111322331333133313221223   >>      C11112331312111112111133133313331312111111322331333133313221222   >>