CARYKH vs. CARK

Do you guys know how regex works? If so, this is a battle among the largest channels of the form /cary*kh*/ (Dijek, Demi Pixel, and Nathaniel Strub have told me that instead, I should go with /cary?kh?/

cark’s channel: https://www.youtube.com/c/cark_irl

Видео CARYKH vs. CARK канала Humany