C11111333133313232233133313331333133112111112113313112113313133313232333231   >>    C1111133313331323223313331333133313311211111211331311211331313331323233323   <<    C11111333133313232233133313331333133112111112113313112113313133313232333233   >>      C11111333133313232233133313331333133112111112113313112113313133313232333232   >>