Given this $8$ directional chain code and following three$()$

$($b$)$

$($c$)$ figures.

$1.$ What is the chain code for the figure $($a$)$ starting from lower left point?

$2.$ write the description of figure $($b$)$ and $($c$)$ independent of its starting

point? Explain step wise.

$3.$ Are all these figures get same descriptor, irrespective of their starting

point? If yes then Which technique you will use to prove it$.$ And if no

then why they don$$t have same descriptor.