There are eighteen types of ahetuka cittas or rootless consciousness, which can be classified into three group as follows:

1. Akusala-vipaka cittas: unwholesome resultant cittas that arise as a result of unwholesome deeds - 7.

2. Ahetuka kusala-vipaka cittas: wholesome and rootless resultant cittas that arise as a result of wholesome deeds - 8.

3. Ahetuka kiriya cittas: rootless functional cittas that are neither cause nor result - 3.