C111123313331323113313331333133313331122112312111112111112323221211   >>    C11112331333132311331333133313331333112211231211111211111232322121   <<    C111123313331323113313331333133313331122112312111112111112323221213   >>      C111123313331323113313331333133313331122112312111112111112323221212   >>