Proofread the following text
system
คำำ ขุ ฝดาษ
user
{'corrected_text': 'คำนำ', 'errors': [{'word': 'คำำ', 'corrected': 'คำนำ', 'start_idx': 0, 'end_idx': 275333}]} {'corrected_text': 'ขุม', 'errors': [{'word': 'ขุ', 'corrected': 'ขุม', 'start_idx': 0, 'end_idx': 275333}]} {'corrected_text': 'ฝีดาษ', 'errors': [{'word': 'ฝดาษ', 'corrected': 'ฝีดาษ', 'start_idx': 0, 'end_idx': 275333}]}
assistant