vim how to paste multiple lines insert into another multiple lines? -

for example, copy multiple lines a:

'fjalkfjljfllfs' 'dasldkjlasdjla' 'jlfajldjaflajl' 

they random string same length.

i have multiple lines text b , want insert b's same position (not begin or end):

'xxxx fjalkfjljfllfs xxxxx' 'xxxx dasldkjlasdjla xxxxx' 'xxxx jlfajldjaflajl xxxxx' 

in vim, there way this?

if mark lines via blockwise visual mode (ctrl + v) , copy them y can put them p.