A.
1线,5吨车,P-H-I-A-B-P; 2线,5吨车,P-E-G-P;3线,5吨车,P-D-C-P;4线,5吨车,P-F-P。
B.
1线,5吨车,P-H-F-G-P; 2线,5吨车,P-I-A-B-C-P;3线,5吨车,P-D-E-P。
C.
1线,5吨车,P-H-F-G-P; 2线,2吨车,P-E-P;3线,5吨车,P-D-C-B-P,4线,5吨车,P-F-P。
D.
1线,5吨车,P-F-G-H-P; 2线,2吨车,P-E-D-P;3线,2吨车,P-I-B-P,4线,5吨车,P-A-C-P。