Input byte stream 

• a = ASCII byte (high bit not set)
• B = byte with high bit set

aaaaaaaaaaBaaaaaaaaaaaaaaaaBBaaaaaaaaaaaaBaaaaaaaaaaa
aaaaaaaaaaaaaBaaaaaaaaaaaaaaaaaaaaaBaaaaaaaaaaaaaaaaa
aaaaBaBaaaaaaaaaaaaaaaaaaaaaaaaaaBBBBBBBBBBaaaaaaaaaa
aaaaaaaaaaaaaaaaBBBaaaaaaaaaaaaaaaaaaaBBaaaaaaaaaaaaa
aaaaaaaaBaaaaaaaaaaaaaaaaaaaaaaaaBaaaaaaaaaaaaaaaaBaa