 The "6D" and "7D" prefixes continued to be used well into 1991.However, the Sarawakian number plates prefixes conflicted with that of several states in Peninsular Malaysia, Brunei and Singapore.For example, the "K" prefix for Kuching Division in Sarawak conflicted with the "K" prefix for Kedah in Peninsular Malaysia and Kuala Belait in Brunei.