C11111211113313112113313331333133313331122112312111133132322321232233131   >>    C1111121111331311211331333133313331333112211231211113313232232123223313   <<    C11111211113313112113313331333133313331122112312111133132322321232233133   >>      C11111211113313112113313331333133313331122112312111133132322321232233132   >>