Minerals may be combined with petroleum.Logical formLearned from7 sentences. A program may combine research.Logical formLearned from7 sentences. Some practices may be combined.Logical formLearned from7 sentences. A course may combine instruction.Logical formLearned from7 sentences. Reading may be combined.Logical formLearned from7 sentences. A person may combine functions.Logical formLearned from7 sentences. A system may be built by combinning parts.Logical formLearned from7 sentences. Persons may combine some ideas.Logical formLearned from7 sentences. Users may be combined.Logical formLearned from7 sentences. Knowledge may be combined.Logical formLearned from7 sentences. An (operating system) may combine reliability with a (development cycle).Logical formLearned from7 sentences. Persons may combine elements.Logical formLearned from7 sentences. A style of display may be determined by combinning some faces.Logical formLearned from7 sentences. Students may combine coursework.Logical formLearned from7 sentences. An election may be combined.Logical formLearned from7 sentences.