C111123313331323113313331333133313231323133312111112111112323223313332331   >>    C11112331333132311331333133313331323132313331211111211111232322331333233   <<    C111123313331323113313331333133313231323133312111112111112323223313332333   >>      C111123313331323113313331333133313231323133312111112111112323223313332332   >>