 This is suggested in the languages of Central Brazilian tribes, where the word for twenty often incorporates the word "feet".Other languages using a base-20 system often refer to twenty in terms of "men", that is, 1 "man" = 20 "fingers and toes".For instance, the Dene-Dinje tribe of North America refer to 5 as "my hand dies", 10 as "my hands have died", 15 as "my hands are dead and one foot is dead" and 20 as "a man dies."