C11112331312111112111133133313331333132323133313331313331312111133132231221   >>    C1111233131211111211113313331333133313232313331333131333131211113313223122   <<    C11112331312111112111133133313331333132323133313331313331312111133132231223   >>      C11112331312111112111133133313331333132323133313331313331312111133132231222   >>