American mahjong wins with 14 tiles that match one line on the card the table agreed to play. The National Mah Jongg League card is a new paid edition every year.
The practice lines here are teaching recipes. They do not match any year's official card. Study Mahjong is not the League.
The same set, with a different card, makes a different list of legal wins. Ask which card before you pick up tiles.
The same set, a different list
The National Mah Jongg League card is a new paid edition every year. This site is not the League. The practice lines are teaching recipes and do not match any year's official card.
Ask which year's card, or which house sheet, before you pick up tiles. Without a card, the table has no list of wins.