afterthought «ke»; «ke'e» with implied «ke»; «ku'e'ake».
For example, say you say «lo broda brode» and then _afterwards_ want to group the selbri to the left as «lo ke broda brode ke'e», e.g. in order to add «je» to the entire group rather than just brode, e.g. «lo ke broda brode ke'e je brodi», you can say «kei'oi». This word is intended to be an afterthought ke. kei'oi follows the regular left-grouping pattern found in Lojban, and bo, being like co an exception that also switches to right-grouping, can be added to it to bind more tightly under right-grouping. kei'e is almost in the salma'o CO, but co binds more loosely and is right-grouping (following LLG CLL 5.8 specifications, where “not even ke..ke'e parentheses can encompass a co” (consider using melo to group over co, which makes ke terminate); this could be reflected in the EBNF grammar with ‘selbri-3 = (selbri-4 [KEIhE selbri-4] …) …’ (likely split into a new selbri non-terminal for consistency), which makes kei'e consistent with ke…ke'e behaviour). Note «lo broda brode kei'ebe» grammatically binds the application to a whole tanru. See also: co'y (co that is a bit tighter and that can be inside ke…ke'e) (co'y allows kei'e to include it), seco'y, ku'e'a.