2nd
be...been
was,were
sink,sank...
sunk
...grew,grown
grow
begin...begun
began
speak,spoke...
spoken
...sold,sold
sell
bite...bitten
bit
hit,hit...
hit
...sat,sat
sit
burn...burnt
burnt
hear,heard...
heard
...sank,sunk
sink
sweep...swept
swept
stick,stuk
stuk
...taught,taught
teach