Diagram Description: Sketching of a hand with 4 fingers and thumb extended is labeled "5-Hand" -- starting with the thumb the digits are listed as nominative, genitive, dative, accusative, ablative

Another sketch of a hand with 4 fingers only extended is labeled "4-Hand" -- starting with the first finger the digits are listed as first principal part, second principal part, third principal part, fourth principal part

The final sketch of a hand with the thumb and first 2 fingers extended is labeled "3-Hand" -- starting with the thumb the digits are listed as first person, second person, third person