C11111211113313112113313331333133313331322133313331323223311211   >>    C1111121111331311211331333133313331333132213331333132322331121   <<    C11111211113313112113313331333133313331322133313331323223311213   >>      C11111211113313112113313331333133313331322133313331323223311212   >>