C11111211113313112113313331333133313331122112312111133132323213111   >>    C1111121111331311211331333133313331333112211231211113313232321311   <<    C11111211113313112113313331333133313331122112312111133132323213113   >>      C11111211113313112113313331333133313331122112312111133132323213112   >>