C11111333133313232233133313331333133313331312111112113313123232321   >>    C1111133313331323223313331333133313331333131211111211331312323232   <<    C11111333133313232233133313331333133313331312111112113313123232323   >>      C11111333133313232233133313331333133313331312111112113313123232322   >>