C11111211113313112113313331333133313133313232233131333131312311   >>    C1111121111331311211331333133313331313331323223313133313131231   <<    C11111211113313112113313331333133313133313232233131333131312313   >>      C11111211113313112113313331333133313133313232233131333131312312   >>