Consonants

	Labial	Alveolar	Post-alveolar	Palatal	Velar	Glottal
Nasal	_ m ⟨m⟩	_ n ⟨n⟩		_ (ɲ)	_ ŋ ⟨q⟩
Plosive	p b ⟨p b⟩	t d ⟨t d⟩			k g ⟨k g⟩	ʔ _ ⟨'⟩
Affricate			(tʃ dʒ)
Fricative		s z ⟨s z⟩	(ʃ ʒ)			h _ ⟨h⟩
Approximant	_ (w)		_ l ⟨l⟩	_ (j)
Tap		_ ɾ ⟨r⟩
Trill		_ r ⟨rr⟩

Hot take: The "whatever rhotic" is highly problematic and should not be used. It is so awful and I cannot believe people still permit it. Don't you realize how many rhotics there are? This is why I enforce rhotics in Sekko to only be the alveolar tap and alveolar trill. No other rhotics are permitted.

Thoughts: I might permit the palatal and retroflex fricatives to be allophones of the post-alveolar fricatives.

Phonology help for (Standard American) English speakers:
/ʃ/ is the sh sound in shell
/ʒ/ is the j in French (think j in j'aime). It's the voiced version of ʃ.
/tʃ/ is the ch sound in chin.
/dʒ/ is the j sound in jam.
/ɾ/ is the r sound in Japanese. It is not the r sound in English, which is the voiced alveolar (or postalveolar) approximant /ɹ/. It's similar to the Spanish trilled r, except that you only touch the tongue to the palate once, rather than multiple times.
/r/ is the Spanish trilled r sound.
/j/ is the y sound in yuck or yum.
/ɲ/ is the ny sound in "nyan cat". It's the ñ sound in Spanish.
/ŋ/ is the ng sound in going or boing.
/ʔ/ is the glottal stop, which is the catch in the throat in uh-oh.
The rest of the sounds you should already know.

In the earlier stages of Sekko development, there were more sounds represented with non-ASCII characters: ň ž š ņ, the last one being the velar nasal (which remains). Changes caused the other three to be removed, leaving ņ as the only non-ASCII character. Because of this, the velar nasal is now written as q, following Toaqic and Ceqlian tradition. There is a wide variety of sounds assigned to letters c, and q since they don't really have canonical pronunciations, and IPA does not use them. Sekko used to have c to mark tʃ, but it was removed.

Phonemes in parentheses are permitted allophonically (see further down).

All consonants may geminate and have length distinction, except for h and '. Geminated consona...

Making A Logical Language