ONE OF TWO IN SEVEN' The term 'ONE OF TWO IN SEVEN' is an 8-letter syllable which can be broken down into TWO parts. The first part, 'ONE OF TWO', refers to the fact that there are TWO distinct elements IN a group of SEVEN. The second part, 'IN SEVEN', indicates that these TWO elements are part of a larger group of SEVEN. This phrase can be used to describe any situation where TWO elements are part of a larger group of SEVEN. For example, it could be used to describe TWO siblings IN a family of SEVEN, or TWO colors IN a rainbow of SEVEN.