read 1b29301b371b5b3f3437681b5b313b3234721b5b6d1b5b346c1b5b481b5b324a616263
# write 31
read 0d
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read 1b5b4a
# write 33
read 6465
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read 0d1b5b4a
# write 35
read 
# write 36
read 
# write 37
read 
# write 38
read 
# write 39
read 
# write 30
read 
# write 61
read 
# write 62
read 
# write 63
read 
# write 64
read 616263
# write 65
read 0d1b5b4a
# write 66
read 07
# write 67
read 6163646566
# write 68
read 
# write 69
