C111123313121111121111331323133313331333132322133313231333131123313232221   >>    C11112331312111112111133132313331333133313232213331323133313112331323222   <<    C111123313121111121111331323133313331333132322133313231333131123313232223   >>      C111123313121111121111331323133313331333132322133313231333131123313232222   >>