The course guidelines say that double-vowels can replace typing the long vowels. However, "hontesse aabraa vaaedis" was counted incorrect. Fix this, kostilus!
Hontesse (the birds) ābrā (and the woman) vāedis (sings/are singing). Putting 'issi' at the end of this sentence would translate into 'The birds and the woman are singing are', which sounds unnatural. That's why :>