if

if i play a lot my dad will get mad
if i played a lot my dad would get mad
if i had played a lot my dad would have got mad

if i have a gun, i will kill a lot
if i had a gun, i would kill a lot
if i had had a gun, i would have killed a lot

if he leave, she will be sad
if he left, she would be sad
if he had left, she would have been sad

if i get a toy, i will be happy
if i got a toy, i would be happy
if i had gotten a toy, i would have been happy

if you show up, it will be bad
if you showed up, it would be bad
if you had showed up, it would have been bad