C11111333133313232233133313331333133112111112113313112113313133313222333131   >>    C1111133313331323223313331333133313311211111211331311211331313331322233313   <<    C11111333133313232233133313331333133112111112113313112113313133313222333133   >>      C11111333133313232233133313331333133112111112113313112113313133313222333132   >>