Half-in-One rule

n-plus-minus-one rule

One-one

one-one (=injective)

one-one mapping

put one one’s thinking cap

Two one one Team

pure literal rule

CARPENTER’S RULE; RULE

One class elementary school; One room school; One teacher school; Single room school

one class school; one room school; one teacher school; single room school

One room school; One class elementary school; One teacher school; Single room school

One teacher school; One class elementary school; One room school; Single room school

Single room school; One class elementary school; One room school; One teacher school

One Case’ One Meeting system

One College Student for One Village Project

One to one customization marketing

one village,one product program

“one point one calories fee” mode