C11111211113313112113313331333133313133313233112111112111111331322332321   >>    C1111121111331311211331333133313331313331323311211111211111133132233232   <<    C11111211113313112113313331333133313133313233112111112111111331322332323   >>      C11111211113313112113313331333133313133313233112111112111111331322332322   >>