ar, el,ella,usted (regular)
ar, ellos,ellas,ustedes (regular)
ar, nostros (regular)
ar, tu (regular)
ar, yo (regular)
imperfect clues
ir, el,ella,usted (irregular)
ir, ellos,ellas (irregular)
ir, nostros (irregular)
ir, tu (irregular)
ir, yo (irregular)
ir/er, el,ella,usted (regular)
ir/er, ellos,ellas,ustedes (regular)
ir/er, nostros (regular)
ir/er, tu (regular)
ir/er, yo (regular)
irregular imperfects
ser, el,ella,usted (irregular)
ser, ellos,ellas,ustedes (irregular)
ser, nostros (irregular)
ser, tu (irregular)
ser, yo (irregular)
the same as ir/er
ver, el,ella,usted (irregular)
ver, ellos,ustedes,ellas (irregular)
ver, nostros (irregular)
ver, tu (irregular)
ver, yo (irregular)