He is schemeful and always has a plan up his sleeve.

Pyramid schemes are illegal in many countries.

Many people lost their life savings in Ponzi schemes.

There are many lift schemes available for the residents.

The axiom schemes are fundamental principles in mathematics.

There are various rhyme schemes in poetry, such as ABAB, AABB, and ABCB.

The colour schemes of the room are vibrant and bold.

He had many grand schemes for his business.

There are various classification schemes used in the field of biology.

The university offers various schemes of studies to cater to the diverse needs of students.