Napoleon was frustrated by his inability to bring the Russian army to battle and lingered at Vitebsk until 12 August to reform his Grande Armée and wait for stragglers to catch up .
PROPN AUX VERB ADP PRON NOUN PART VERB DET ADJ NOUN ADP NOUN CCONJ VERB ADP PROPN ADP NUM PROPN PART VERB PRON PROPN PROPN CCONJ VERB ADP NOUN PART VERB ADP .