Symbols for Systematic Dozenal Nomenclature

I came up with a symbol system for the SDN metric prefixes:


(tandem (t) used as an example)

Number	Positive Power	Symbol	Negative Power	Symbol
1	unquatandem	ut	unciatandem	uct
2	biquatandem	bt	biciatandem	bct
3	triquatandem	tt	triciatandem	tct
4	quadquatandem	qt	quadciatandem	qct
5	pentquatandem	pt	pentciatandem	pct
6	hexquatandem	ht	hexciatandem	hct
7	septquatandem	st	septciatandem	sct
8	octquatandem	ot	octciatandem	oct
9	ennquatandem	et	ennciatandem	ect
X	decquatandem	dt	decciatandem	dct
E	levquatandem	lt	levciatandem	lct
10	unnilquatandem	unt	unnilciatandem	unct
11	unnunquatandem	uut	unnunciatandem	uuct
...
25	bipentquatandem	bpt	bipentciatandem	bpct