C11112331312111112111133133313331333133313331333133313231333132322231221   >>    C1111233131211111211113313331333133313331333133313331323133313232223122   <<    C11112331312111112111133133313331333133313331333133313231333132322231223   >>      C11112331312111112111133133313331333133313331333133313231333132322231222   >>