20: twenty, 21: twenty-one, 22: twenty-two, 23: twenty-three, 24: twenty-four, 25: twenty-five,
26: twenty-six, 27: twenty-seven, 28: twenty-eight, 29: twenty-nine, 30: thirty
20: twenty, 21: twenty-one, 22: twenty-two, 23: twenty-three, 24: twenty-four, 25: twenty-five,
26: twenty-six, 27: twenty-seven, 28: twenty-eight, 29: twenty-nine, 30: thirty