Re: [tied] The centum-word.

> Check the numeral "twenty", Mark.
>
> Piotr

I had, and did again. Yes. Indeed: the twenty-word begins with wi-.

EIEC says it's a dual.

I would not recognize a dual. I did not get that far in Greek. Is this
why I am being obtuse?

Please, Piotr: explain. All the two-words and related prefixes really
do begin 'dw'.