Help with a Russian crochet abbreviation

Hi,

I have an amigurumi pattern here and I’m kind of stuck.
There are 7 sc in the previous round.

The following round then looks like this:

 1 сбн, пр, пр, 2 сбн, уб (8)

According to the translations I have, this would mean:
сбн = single crochet
пр   = increase 
уб   = decrease  

But mathematically, I don’t end up with the required 8 stitches, so I suspect there’s a translation error.

It would be great if someone could help me.

Thanks in advance.

Can’t you just use Google Translate? 

No. There is no key for it.
Only the abbreviations mentioned above in the pattern. 

I do get 8 sts:
1 sc (= 1 st)
increase (= 2 sts)
increase (= 2 sts)
2 sc (= 2 sts)
1 decrease (= 1 st)
That adds up to 8 sts.

Yes, I agree with what Ruth wrote. 

Thanks for your help. I must have really had a blind spot last night 😟