12. Given the clause set S, where S {1.(t|d), 2.(Ee), 3. (eli), 4.(g|li), 5.(t|cd|g), 6.(c), 7.(ly), 8.(cld), 9.(cle) }. Find the following resolution proofs for S: (a) unit resolution; (b) input resolution; (c) positive resolution; and (d) ordered resolution using the order t>i>g>e>d>c. 12. Given the clause set S, where S {1.(t|d), 2.(Ee), 3. (eli), 4.(g|li), 5.(t|cd|g), 6.(c), 7.(ly), 8.(cld), 9.(cle) }. Find the following resolution proofs for S: (a) unit resolution; (b) input resolution; (c) positive resolution; and (d) ordered resolution using the order t>i>g>e>d>c