C11111211113313112113313331333133313331122112312111133132222133313232331   >>    C1111121111331311211331333133313331333112211231211113313222213331323233   <<    C11111211113313112113313331333133313331122112312111133132222133313232333   >>      C11111211113313112113313331333133313331122112312111133132222133313232332   >>