He only wrote twice to mother and three times to me in the last six months.

Haplography is the act of writing once what should be written twice.

She wrote once or twice but that was all.

I had written twice, but there had been no answer.

He wrote twice to Anselm urging him to come quickly.

I wrote to you in the autumn once or twice I think.

Nobody questioned why Hitler would have written one diary twice.

I sometimes find a letter is backward or the same word is written twice.

If he'd cared about his mother while she was alive, he might have written once or twice.

Noah wrote to the Superior twice in 1953, with two days between letters, but neither was replied to.