Present
I    unfasten
you  unfasten
he   unfastens
we   unfasten
you  unfasten
they unfasten

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

Past
I    unfastened
you  unfastened
he   unfastened
we   unfastened
you  unfastened
they unfastened

Pluperfect
I    had unfastened
you  had unfastened
he   had unfastened
we   had unfastened
you  had unfastened
they had unfastened

Future
I    will unfasten
you  will unfasten
he   will unfasten
we   will unfasten
you  will unfasten
they will unfasten

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

Present
I    unfasten
you  unfasten
he   unfasten
we   unfasten
you  unfasten
they unfasten

Present
I    have unfastened
you  have unfastened
he   have unfastened
we   have unfastened
you  have unfastened
they have unfastened

Imperfect
I    unfastened
you  unfastened
he   unfastened
we   unfastened
you  unfastened
they unfastened

Pluperfect
I    had unfastened
you  had unfastened
he   had unfastened
we   had unfastened
you  had unfastened
they had unfastened

Present
I    would unfasten
you  would unfasten
he   would unfasten
we   would unfasten
you  would unfasten
they would unfasten

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

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

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

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

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

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

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

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

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