The positive sequence current on a single line-to-ground fault on phase A at the load end of a radial transmission system is -j2 p.u. For a double line-to-ground fault on phases B and C, the positive sequence current is j3.57 P.u., and for a double-line fault between phases B and C, its value is -j2.67. Assuming the sending-end voltage E = 1.2, find the sequence impedances for this system.