Does it sound weird if we use sietnek instead of besietnek

Besietnek. I am Hungarian and in 26 years, Ive never heard anyone using "besietnek", but the braindead idiot who made these test obviously used google translate for 90% of the execises.

No one has ever used besietnek :D Sounds weird to me, but who knows... Anyhow, sietnek should be accepted as it means the same.