C1111233131211111211113313231333133313331323221333133313232223233231   >>    C111123313121111121111331323133313331333132322133313331323222323323   <<    C1111233131211111211113313231333133313331323221333133313232223233233   >>      C1111233131211111211113313231333133313331323221333133313232223233232   >>