N2 — outside your level filter
both X and Y — two items each tagged with も, hung on a ば-clause and presented as a matched pair
この町には古い寺もあれば、新しい美術館もある。
kono machi ni wa furui tera mo areba, atarashii bijutsukan mo aru.
This town has old temples, and it has a new art museum as well. neutral
世の中には、猫が好きな人もいれば、苦手な人もいるからね。
yo no naka ni wa, neko ga suki na hito mo ireba, nigate na hito mo iru kara ne.
In this world there are people who love cats and people who can't stand them, you know. casual
Variants
も〜なら〜もmo~nara~moalternant
the shape nouns and な-adjectives take in the first half — 値段も手頃なら味もいい; the fuller であれば belongs to written prose
も〜ば〜も
もばもmo ba moN2neutral