field1 = 3
field2 = 5
field3 = Hello world
field4 = 1
field1: 00110
field2: 001111
field3[ 0]: H
field3[ 1]: E
field3[ 2]: L
field3[ 3]: L
field3[ 4]: O
field3[ 5]:  
field3[ 6]: W
field3[ 7]: O
field3[ 8]: R
field3[ 9]: L
field3[10]: D
field4: 0