(Mortar attacks) can be heavy.Logical formLearned from3 sentences. A base may come under mortar.Logical formLearned from3 sentences. A barrage can be from mortars.Logical formLearned from3 sentences. A (trench mortar section) can be with some mortars.Logical formLearned from3 sentences. Mortars may hit market.Logical formLearned from3 sentences. Some mortars may be hited.Logical formLearned from3 sentences. A (machine gun) may be replaced with some mortar.Logical formLearned from3 sentences. (Mortar shells) may begin.Logical formLearned from3 sentences. A mortar may be intended for use.Logical formLearned from3 sentences. A mortar may undergo an invention.Logical formLearned from3 sentences. Mortar may undergo an introduction.Logical formLearned from3 sentences. A mortar can be used.Logical formLearned from3 sentences. A mortar may be mounted.Logical formLearned from3 sentences. A mortar can be liquid.Logical formLearned from3 sentences. A design may pertain-to a mortar.Logical formLearned from3 sentences.