Present
I    master
you  master
he   masters
we   master
you  master
they master

Perfect
I    have mastered
you  have mastered
he   has mastered
we   have mastered
you  have mastered
they have mastered

Past
I    mastered
you  mastered
he   mastered
we   mastered
you  mastered
they mastered

Pluperfect
I    had mastered
you  had mastered
he   had mastered
we   had mastered
you  had mastered
they had mastered

Future
I    will master
you  will master
he   will master
we   will master
you  will master
they will master

Future perfect
I    will have mastered
you  will have mastered
he   will have mastered
we   will have mastered
you  will have mastered
they will have mastered

Present
I    master
you  master
he   master
we   master
you  master
they master

Present
I    have mastered
you  have mastered
he   have mastered
we   have mastered
you  have mastered
they have mastered

Imperfect
I    mastered
you  mastered
he   mastered
we   mastered
you  mastered
they mastered

Pluperfect
I    had mastered
you  had mastered
he   had mastered
we   had mastered
you  had mastered
they had mastered

Present
I    would master
you  would master
he   would master
we   would master
you  would master
they would master

Perfect
I    would have mastered
you  would have mastered
he   would have mastered
we   would have mastered
you  would have mastered
they would have mastered

Present
I    am mastering
you  are mastering
he   is mastering
we   are mastering
you  are mastering
they are mastering

Perfect
I    have been mastering
you  have been mastering
he   has been mastering
we   have been mastering
you  have been mastering
they have been mastering

Past
I    was mastering
you  were mastering
he   was mastering
we   were mastering
you  were mastering
they were mastering

Pluperfect
I    had been mastering
you  had been mastering
he   had been mastering
we   had been mastering
you  had been mastering
they had been mastering

Future
I    will be mastering
you  will be mastering
he   will be mastering
we   will be mastering
you  will be mastering
they will be mastering

Future perfect
I    will have been mastering
you  will have been mastering
he   will have been mastering
we   will have been mastering
you  will have been mastering
they will have been mastering

Present
I    would be mastering
you  would be mastering
he   would be mastering
we   would be mastering
you  would be mastering
they would be mastering

Perfect
I    would have been mastering
you  would have been mastering
he   would have been mastering
we   would have been mastering
you  would have been mastering
they would have been mastering