Latin Spanish French
Infinitive esse ser être (estre)
1p. sing. sum soy suis
2p. sing. es eres es
3p. sing. est es est
1p. pl. sumus somos sommes
2p. pl. estis sois êtes (estes)
3p. pl. sunt son sont

I love making this table. It’s fascinating. Three different languages, having evolved separately over thousands of years. And yet the conjugation of “to be” is virtually the same in all three. In fact, in some cases the verb form is, orthographically, exactly the same. A wonderful example of order behind an organic system, one of my favorite themes.