{HEAD ~ The speed change control method} for an automatic transmission 3, wherein said speed changing operation of said second transmission mechanism started in said step includes engaging a third friction element after the one way clutch is locked, said included in {TAIL ~ the second transmission mechanism} and being arranged in parallel, with respect to a power transmission, to the one way clutch 
{ HEAD ~ The speed change control method } for an automatic transmission 3 , wherein said speed changing operation of said second transmission mechanism started in said step includes engaging a third friction element after the one way clutch is locked , said included in { TAIL ~ the second transmission mechanism } and being arranged in parallel , with respect to a power transmission , to the one way clutch
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