LAMAHI: Former home minister and central member of Nepali Congress Khum Bahadur Khadka today said his party could not form a coalition government with the Unified CPN-Maoist. Terming the Maoist activities anarchic, he said the NC would have to bear a loss if it formed a ruling coalition with the former rebels. Talking to party cadres here, Khadka said his party should not trust the Maoists since they had not kept their promises.