Ptarmigan has a silent P.
Aisle has a silent A.
Dossier has a silent R.
Depot has a silent T.
Column has a silent N.
Lime has a silent E.
February has one silent R.
Put the silent letters together, and they spell PARTNER.
The sequence is 0,1,2,3,4,5,6,7, 8
When there is a homonym equivalent for the number (one=won, too=two…) then it is written. When there isn’t one, the word “none” is substituted.