C11111211113313112113313331333133313331333131211113313331323123223311   >>    C1111121111331311211331333133313331333133313121111331333132312322331   <<    C11111211113313112113313331333133313331333131211113313331323123223313   >>      C11111211113313112113313331333133313331333131211113313331323123223312   >>