C11111211113313112113313331333133313331122112312111133132322321111331322333121   >>    C1111121111331311211331333133313331333112211231211113313232232111133132233312   <<    C11111211113313112113313331333133313331122112312111133132322321111331322333123   >>      C11111211113313112113313331333133313331122112312111133132322321111331322333122   >>