Table 1.

BioCode ncDNA

d	AT	CT	TT	CA	${\mathcal{X}}^{\mathbf{2}}\setminus \mathcal{D}$
$\left|{\mathcal{S}}_{\mathbf{d}}\right|$	3	3	3	1	4
${\mathcal{S}}_{\mathbf{d}}$	A	A	A	C	A
	T	T	T		T
	C	C	C		C
					G
	↓			Decode
	Encode			↑
${\mathcal{ℳ}}_{\mathbf{d}}$	0	0	0		00
	10	10	10		01
	11	11	11		10
					11

Given the dinucleotide sequence d the next message base to be encoded is one belonging to the set ${\mathcal{S}}_{\mathbf{d}}$. Each bit message found in ${\mathcal{ℳ}}_{\mathbf{d}}$ corresponds to a base in ${\mathcal{S}}_{\mathbf{d}}$.