An (undercarriage track) can be narrow.Logical formLearned from4 sentences. An undercarriage can be a track.Logical formLearned from4 sentences. A (track undercarriage) can be wide.Logical formLearned from4 sentences. An undercarriage can be wide.Logical formLearned from4 sentences. An undercarriage can be unusual.Logical formLearned from4 sentences. An undercarriage can be an arrangement.Logical formLearned from4 sentences. A (nosewheel undercarriage) can be fixed.Logical formLearned from4 sentences. An undercarriage can be simplified.Logical formLearned from4 sentences. Units may pertain-to a (tailskid undercarriage).Logical formLearned from4 sentences. Units of an undercarriage may be linked by a cross-axle.Logical formLearned from4 sentences. An undercarriage may be modified.Logical formLearned from4 sentences. Configuration can be with (tailwheel undercarriage).Logical formLearned from4 sentences. An undercarriage may consist of a mainwheel.Logical formLearned from4 sentences. An undercarriage may retract inwards.Logical formLearned from4 sentences. An undercarriage can be a structure.Logical formLearned from4 sentences.