Thanks but I'm using a the QWERTY version of the keyboard (easier for someone used to typing in English) where you type ě by pressing the number 2, š by pressing the number 3, etc.
I think I figured out the problem though. I'm missing a key directly to the right of the" ]" key. Instead I have a larger enter key on my computer. :-(
On my keyboard, the "diacritics" key is not next to the ] key, but in the top row, to the left of the backspace key (the English layout has a = assigned to that key). I'm using a Czech QWERTY keyboard, too, by the way.
Pressing the diacritics key produces a čárka (acute accent), which can be followed by vowels to make á,é,í,ó,ú (and ŕ,ĺ for Slovak). Pressing SHIFT+the diacritics key produces a háček (caron), which can be followed by consonants or "e" to make ě,č,š,ř,ž,ď,ť,ň, (and ľ for Slovak).
the word "noci" is it masculin plural? and why we can't say dlouhí instead of dlouhé?