Which electron configuration represents a violation of the pauli exclusion principle?

The electron configuration that represents a violation of the pauli exclusion principle is:

1s: ↑↓ 
2s: ↑↑ 
2p: ↑
The Pauli exclusion principle  refers to the quantum mechanical rule which expresses that at least two indistinguishable fermions (the particles with half-integer spin) can't involve a similar quantum state inside a quantum framework all the while.