C11111211113313112113313331333133313133313232233132322133313131   >>    C1111121111331311211331333133313331313331323223313232213331313   <<    C11111211113313112113313331333133313133313232233132322133313133   >>      C11111211113313112113313331333133313133313232233132322133313132   >>