Proofread the following text
system
ศศก. สถยบ คศลาศ
user
{'corrected_text': 'ศก.', 'errors': [{'word': 'ศศก.', 'corrected': 'ศก.', 'start_idx': 0, 'end_idx': 275333}]} {'corrected_text': 'สยบ', 'errors': [{'word': 'สถยบ', 'corrected': 'สยบ', 'start_idx': 0, 'end_idx': 275333}]} {'corrected_text': 'คลาศ', 'errors': [{'word': 'คศลาศ', 'corrected': 'คลาศ', 'start_idx': 0, 'end_idx': 275333}]}
assistant