Only 1s and 9s.
Every tile is a one or a nine of a suit, with no honours and no middle tiles. It is ten faan.
Because runs are impossible, every set is a pung or a kong. Only the ones and nines of three suits qualify, which is 24 tiles in total.
Like All Honours it is an opening-hand decision. The tiles are cheap early, since terminals are what players discard first, and then they dry up completely. Without a strong start you will be left holding a hand of dead tiles with nothing to fall back on.
Keeping honours in the hand. Winds and dragons are banned here, unlike in Terminals and Honours. One dragon pung drops the hand from ten faan to one, which is the largest single mistake available in this pattern.
It implies All Pungs, which scores alongside. There is little else to add, since honours are excluded and so are the suit patterns that need middle tiles. The ten faan is close to the whole value.
Are honours allowed?
No. A single wind or dragon makes it Terminals and Honours at one faan instead of ten.
Can I have a chow of 1, 2, 3?
No. The two is a middle tile and is not permitted.
Which is harder, this or All Honours?
Both are ten faan. All Terminals draws on 24 tiles and All Honours on 28, so terminals is marginally the harder of the two.
Play Mahjong Winds
Every win shows its faan line by line, using the table on this page.