s/ 0/ 0x0/g
s/^0/0x0/g

s/ 1/ 0x1/g
s/^1/0x1/g

s/ 2/ 0x2/g
s/^2/0x2/g

s/ 3/ 0x3/g
s/^3/0x3/g

s/ 4/ 0x4/g
s/^4/0x4/g

s/ 5/ 0x5/g
s/^5/0x5/g

s/ 6/ 0x6/g
s/^6/0x6/g

s/ 7/ 0x7/g
s/^7/0x7/g

s/ 8/ 0x8/g
s/^8/0x8/g

s/ 9/ 0x9/g
s/^9/0x9/g

s/ a/ 0xa/g
s/^a/0xa/g

s/ b/ 0xb/g
s/^b/0xb/g

s/ c/ 0xc/g
s/^c/0xc/g

s/ d/ 0xd/g
s/^d/0xd/g

s/ e/ 0xe/g
s/^e/0xe/g

s/ f/ 0xf/g
s/^f/0xf/g

