* NO plane can perform a stall ([1S1],[1L1],[1R1]) after a [28L/R2], because the moves are in [brackets] : [non-repeatable].
* ALL planes can perform a stall ([1S1]/[1L1]/[1R1]) after a 27S2, 29S2, 30L/R2 because these are not in brackets.
* After a [non-repeatable] move, enemies get no bonus for shooting at you UNLESS it was a stall ([1S1],[1L1],[1R1]). The other [bracketed] moves are NOT stalls.
Hope this finally (

) helps
neko