A gene may wreak havoc.Logical formLearned from3 sentences. A havoc may work by a river.Logical formLearned from3 sentences. A drama can be about a havoc.Logical formLearned from3 sentences. Games may play havoc with schoolchildrens.Logical formLearned from3 sentences. Deforestation may play havoc with watersheds.Logical formLearned from3 sentences. A parasite may wreak havoc.Logical formLearned from3 sentences. A havoc can be suburban.Logical formLearned from3 sentences. A (box-office havoc) can be worldwide.Logical formLearned from3 sentences. A man may wreak havoc.Logical formLearned from3 sentences. A bankruptcy may wreak havoc on markets.Logical formLearned from3 sentences. A rand may wreak havoc on (debt markets).Logical formLearned from3 sentences. A siege may bring havoc.Logical formLearned from3 sentences. An administration may create havoc.Logical formLearned from3 sentences. Evil spirits may wreak havoc on humans.Logical formLearned from3 sentences. A proposal may create havoc.Logical formLearned from3 sentences.