PODER = TO BE ABLE

puedo = I  am able (present tense)
puedes = You are able (present tense)
puede = He or she are able (present tense)
podemos = We are able (present tense)
podéis = You (plural) are able (present tense)
pueden = They are able (present tense)
Note: Podía = I am able (imperfect tense)