Research on Universal Combinatorial Coding

Table 1

Dictionary space and the position of the coded sequence.

Ordinal	Sequence
0	a a b c d
1	a a b d c
2	a a c b d
⋮	⋮
33	b d a a c
34	b d a c a
35	b d c a a
⋮	⋮
57	d c a a b
58	d c a b a
59	d c b a a

Bold refers to the position of the example “bdaca” in the dictionary is 34. The size of the dictionary is 60(0~59). It is similar to the example “bdaca” in Figure 3.