C11111333133313232233133313331333133313331312111112113313133321   >>    C1111133313331323223313331333133313331333131211111211331313332   <<    C11111333133313232233133313331333133313331312111112113313133323   >>      C11111333133313232233133313331333133313331312111112113313133322   >>