$1=1=1^3$

$3+5=8=2^3$

$7+9+11=27=3^3$

$13+15+17+19=64=4^3$

$21+23+25+27+29=125=5^3$

Express the number $7^3$ as the sum of odd numbers using the above pattern.

Consider the following pattern. 

$2^3-1^3=1+2\times 1\times 3$

$3^3-2^3=1+3\times 2\times 3$

$4^3-3^3=1+4\times 3\times 3$

Write $7^3-6^3$ in the above pattern and find its value.

Consider the following pattern. 

$2^3-1^3=1+2\times 1\times 3$

$3^3-2^3=1+3\times 2\times 3$

$4^3-3^3=1+4\times 3\times 3$

Write ${12}^3-{11}^3$ in the above pattern and find its value.

Consider the following pattern. 

$2^3-1^3=1+2\times 1\times 3$

$3^3-2^3=1+3\times 2\times 3$

$4^3-3^3=1+4\times 3\times 3$

Write ${20}^3-{19}^3$ in the above pattern and find its value.

Consider the following pattern. 

$2^3-1^3=1+2\times 1\times 3$

$3^3-2^3=1+3\times 2\times 3$

$4^3-3^3=1+4\times 3\times 3$

Write ${51}^3-{50}^3$ in the above pattern and find its value.