form of both verbs that is necessary, not the full participle form. Subordinate clause examples for and : In subordinate clauses, the reduplicated part is needed as the sentence would otherwise be ungrammatical in both and . The same is true for the past tense. Since there is only one past tense in Swiss German and since this is formed using an auxiliary verb – 'to be' or 'to have', depending on the main verb – reduplication seems to be affected and therefore, less strictly enforced for and , while it is completely ungrammatical for and optional for respectively. Questions Questions behave a lot like their declarative counterparts, and reduplication is therefore mandatory for both motion verbs 'to go' and 'to come', while 'to let' and 'to start, to begin' show weaker doubling effects and more optionality. Furthermore, this is the case for both open and close (yes/no) questions. Consider the following examples: in open and close questions: Just like in declarative forms, could be reduced to a- and thus be considered the detachable prefix. In this case, would no longer be a reduplicated verb, and that is where the language development seems to move towards. in open and close questions: and especially , however, do not allow for their reduced doubling part to be left out in questions, irrespective of the fact whether they are open or close: in open and close questions: in open and close questions: Imperative mood In the imperative mood, just like in questions, 'to go' and 'come' are very strict in their demand for doubling. The same is true for 'to let'; it is ungrammatical to use it in imperative mood undoubled. On the other hand, leaves a lot more room for the speaker to play with. Speakers accept both sentences with only the detachable prefix and no doubling, and sentences with the full doubled form. Imperative mood: Imperative mood: Imperative mood: Imperative mood: Cross-doubling with and In the case of the verb 'to come', there are situations when instead of it being reduplicated with its reduced form , the doubled short form of 'to go', , is used instead. This is possible in almost all instances of , regardless of mood or tense. The examples below outline reduplicated with both its reduced form and the reduced form of , , in different sentence forms. Declarative main clause, present tense Declarative main clause past