I'd appreciate some help deciphering a couple words on my great-grandfather's gravestone.  What I've made out so far is:

Here Lies
Our Beloved Father
xxx Rav Ari Leib son of
Shalom HaCohen xxx
Kashkin
Died 11 MarHeshvon 5683
(2 Nov 1922)

What I'm having trouble with are the 
first word on the third line:  מוה
last word on the fourth line: שוב (acronym?)
Not even sure I'm reading the letters correctly.

I've tried everything I could think of but haven't found anything that made sense.

Thanks,

Lee Jaffe
Koshkin, Joroff, Weinblatt, Schwartz, Jaffe