Boss may ring changes.Logical formLearned from4 sentences. (Security forces) may be ringed.Logical formLearned from4 sentences. (City blocks) may ring with a sound of shells.Logical formLearned from4 sentences. A male may ring a person from a world-city.Logical formLearned from4 sentences. Some suburbs may ring a city.Logical formLearned from4 sentences. Some guns may ring a city.Logical formLearned from4 sentences. Heavy weapons may ring a capital.Logical formLearned from4 sentences. Men may ring a doorbell.Logical formLearned from4 sentences. Air may ring with a thunder of an artillery.Logical formLearned from4 sentences. A plain may be ringed by mountains.Logical formLearned from4 sentences. Some armored brigades may ring a city.Logical formLearned from4 sentences. A bell may be ringed in a morning.Logical formLearned from3 sentences. A world-city may ring a bell.Logical formLearned from3 sentences. A male may ring an opening.Logical formLearned from3 sentences. A quake may ring an alarm to workers.Logical formLearned from3 sentences.