slide
slid/ slid
sow
sowed/ sown
smell
smelt/ smelt
speak
spoke/spoken
spell
spelt-spelled/ spelt-spelled
spend
spent/spent
spill
spilt/spilt
spoil
spoilt/spoilt
spread
spread/spread
spring
sprang/sprung
stand
stood/stood
stick
stuck/stuck
steal
stole/stolen
spit
spat/spat
split
split/split