7D, C, E, A, F / B
 
6D, C, E, A, F / BD, C, E, A, F / C
└─────┬─────┘
5D, C, E, A, F / B ∧ C
4D, C, E, A, F / AD, C, E, A, F / B ∧ C
└──────────┬─────┘               
3D, C, E, A, F / A ∧ (B ∧ C)
2D ∧ C, E, A, F / A ∧ (B ∧ C)
1D ∧ C, E, A ∧ F / A ∧ (B ∧ C)
(D ∧ C) ∧ E, A ∧ F / A ∧ (B ∧ C)
1 2 3 4 5 6 7