C11111333133313232233133313331333133112111112113313331333132321323131122213111   >>    C1111133313331323223313331333133313311211111211331333133313232132313112221311   <<    C11111333133313232233133313331333133112111112113313331333132321323131122213113   >>      C11111333133313232233133313331333133112111112113313331333132321323131122213112   >>