New keys·Index fingers stretch inward, then come straight back to T and N.
WPM0
ACC—
DONE0%
ddd hhh dhd hdh dhd hdh dh
Left Index
Colemak lesson 5 of 20 — it practises D · H on a home row of A R S T · N E I O. By this point you're typing with 11 keys, accuracy before speed.