य, र, ल व (y, r, l, v)

The next group of letters have the tongue in different parts of the mouth.

The first letter is य (y) as in yes:

Yo

What follows in the letter र (r) as in serene:

Yo

Next comes the letter ल (l) as in label:

Yo

The last letter in this group is the letter व (l) as in vine.  However, for this sound the lips simply touch (like the sound b) without contacting the teeth:

Yo