This is an example of a smooth transition from a temporary ikkyo to yonkyo. It is similar to the ikkyo-to-sankyo transition, except after the hand switch Uke‘s arm is pulled back so yonkyo tsubo can be pressed. Here is omote and ura.

I like how Tori slides out with his right knee and enters with his left leg. I like this because is left leg is already at Uke‘s armpit under his shoulder when he applies the pressure. Alternate ways require a leg switch which this version does not require.