Drift key: shift prop key: ctrl prop transposition: alt right hand: middle finger in ↑, left, index finger in ←, ring finger in →, index finger and ring finger do not leave except middle finger. Left hand: the middle finger is in the drift key, the index finger is in the prop key, the middle finger does not leave, and the index finger only transposes. This is the most used and the best one. Try 1 hour to get started! Please adopt!