Dynamic Enumeration Tree
abcd
{ }
abc
{r1}
r1r2
{c}
r1
{bc}
ab
{r1}
a
{r1r2}
ac
{r1r2}
acd
{ r2}
a
{r1r2}
r2
{cd}
ad
{r2}
r1
{c}
r1r3
{ c}
b
{r1r3}
{ }
r3
{ c}
abc: {r1}
ac: {r1r2}
acd: {r2}
c
{r1r2r3}
r2
{d }
d
{r2r4}
Feature enumeration
to
Row enumeration