C11112331312111112111133133313331333132112312111133232133313231221   >>    C1111233131211111211113313331333133313211231211113323213331323122   <<    C11112331312111112111133133313331333132112312111133232133313231223   >>      C11112331312111112111133133313331333132112312111133232133313231222   >>