A muttering can be dark.Logical formLearned from8 sentences. Some muttering can be about credentials.Logical formLearned from8 sentences. Thunder may undergo mutterings.Logical formLearned from8 sentences. A muttering can be soft.Logical formLearned from7 sentences. A person may hear a muttering.Logical formLearned from7 sentences. Mutterings can be quiet.Logical formLearned from7 sentences. A man may undergo mutterings.Logical formLearned from7 sentences. A muttering can be green.Logical formLearned from7 sentences. Words may undergo a muttering.Logical formLearned from6 sentences. Mutterings may pertain-to persons.Logical formLearned from6 sentences. A muttering can be disgruntled.Logical formLearned from6 sentences. A bit can be constituted-of-or-filled-with muttering.Logical formLearned from6 sentences. A crowd may undergo mutterings.Logical formLearned from6 sentences. A muttering can be indistinct.Logical formLearned from6 sentences. A muttering can be loud.Logical formLearned from6 sentences.