“ If any one of the consecutive sentences on Counts Two, Four or Seven be invalid it cannot be said that such of the 'concurrent' sentences as are valid will run with such invalid consecutive sentence, and thus support that much of the aggregate term of imprisonment, because the trial judge did not make the concurrent sentences to run with any particular one of the consecutive sentences. It is therefore clear, under the present sentences, that imprisonment for an aggregate period of 5 to 15 years can be sustained only if each of the consecutive sentences on Counts Two, Four, and Seven is valid. ”

“ III) §§ 4704 (a) , 4705 (a) , 7237 (a) , 26 U.S.C.A. §§ 4704 (a) , 4705 (a) , 7237 (a) .↑ In support of its stated position the Government relies on its understanding of this Court's opinions in Ex parte De Bara, 179 U.S. 316, 21 S.Ct. ”