C11111333133313232233133313331333133313233213331323133313111231   >>    C1111133313331323223313331333133313331323321333132313331311123   <<    C11111333133313232233133313331333133313233213331323133313111233   >>      C11111333133313232233133313331333133313233213331323133313111232   >>