Nobody's perfeckt! I do sometimes add a word here or there that while typing seemed like a good choice. When proofread before 'submit reply' I usually had corrected them (for the most part). A very long time ago I had a large class of exchange students lament to me that the English language was the hardest encountered. No telling what is going on inside my mind, suffice to say I generally get it right. Oh well, maybe next time?