LEVANTAR = TO RAISE/LIFT UP

levanto = I raise/lift up (present tense)
levantas = You raise/lift up (present tense)
levanta = He or she raise/lift up (present tense)
levantamos = We raise/lift up (present tense)
levantáis = You (plural) raise/lift up (present tense)
levantan = They raise/lift up (present tense)
Note: You cannot say "no puedo levantar" without using another noun because you have to raise or lift something.   If you want to say that "you cannot get up" then you say "no puedo levantarme."