C11111333133313232233133313331333133112111112113313331312111111331311211233131   >>    C1111133313331323223313331333133313311211111211331333131211111133131121123313   <<    C11111333133313232233133313331333133112111112113313331312111111331311211233133   >>      C11111333133313232233133313331333133112111112113313331312111111331311211233132   >>