C11111211113313112113313331333133313331333131211113313331323223313112113312131   >>    C1111121111331311211331333133313331333133313121111331333132322331311211331213   <<    C11111211113313112113313331333133313331333131211113313331323223313112113312133   >>      C11111211113313112113313331333133313331333131211113313331323223313112113312132   >>