role of 'would'

[taraa]

Hi!

I know that would has different usages, for requests, conditionals, Habitual actions in the past, Talking about the future in the past, Willingness in the past, Being less direct....

which role of 'would' is used in the sentence below for the bold 'would'?

Thus, to try to construct a (1a) as I did with (2a) and (3a), where the infinitival clause is replaced by an "if" clause per t's suggestion, it would have to go like this.

[Alan]

Conditional.