The reduced vowel /ɪ/ in 'been' is a __________ form.

The sound /ə/ is called the __________.

If a sound is altered because of the following sound, this is an example of __________.

When a consonant at the end of one word joins the vowel at the beginning of the next, we have an example of __________.

When a consonant is wholly removed (e.g., the /d/ in 'sandwich') we call this __________.

When a sound is added (e.g., the /w/ in 'go on') this is called __________.