Replace ids with values

Hi ,
 
I have A nvarchar value Like This =id1-1,2 ; id2-1,3 ; .......

Id  value
----------
id1  abc
id2  bcd
id3  cdf

now i want nvarchar value abc-1,2;bcd-1,3;

i want return the nvarchar value with replace of id1,id2 values(i have a table id,value)