C11111211113313112113313331333133313331122112312111133132322321111133313222211   >>    C1111121111331311211331333133313331333112211231211113313232232111113331322221   <<    C11111211113313112113313331333133313331122112312111133132322321111133313222213   >>      C11111211113313112113313331333133313331122112312111133132322321111133313222212   >>