How can I work out a bad mahjong card?

Bad cards, such as1470,000 (or bobbin or sliver, etc.), 369 barrels, 258 cards. These only need to be separated by two words. For example, 147, with two numbers between one and four, 147, 148, 149, 158 and 159.

Then there is a card with words, a red card, a whiteboard, a southeast and northwest wind, and a fortune. If you have seven words in your hand and none of them are words, you don't have to put them together.

introduce

Mahjong tiles, also known as "sparrow tiles". A kind of competition or entertainment. The project with the largest number of participants in the world. Digital cards are divided into 10,000 cards, strips (ropes) and cakes (tubes), each with 1 to 94 cards, totaling 108 cards.

In addition, China has four cards, namely Mao, Bai, Dong, Nan, Xi and Bei, and eight cards with flowers, totaling 144 cards. Four people play together, each with thirteen cards. After eating and touching, combine into four groups (three cards as a group) and then add a deck of cards to win.