CIC-NLP at MAHED 2025 TASK 1:Assessing the Role of Bigram Augmentation in Multiclass Arabic Hate and Hope Speech Classification. - Tolulope Olalekan Abiola; Oluwatobi Joseph Abiola; Temitope Dasola Ogunleye; Tewodros Achamaleh; Obiadoh Augustine Ekenedilichukwu (ArabicNLP (Shared Tasks), 2025)