input: [0] Purse (a.k.a. handbag) [1] one shoulder strap, carried between arm and torso or across torso [2] Familiarity if you're used to carrying purses or shoulder bags [3] 
output: Tendency to carry more than necessary (unless you empty and repack the purse); cannot hold many items; sore shoulder if your purse is large and/or heavy.