9 echo "-4:2 |"${1: -4:2}
10 echo "-4:-1 |"${1: -4:-1}
11 echo "-4:-2 |"${1: -4:-2}
12 echo "-4:-3 |"${1: -4:-3}
13 echo "-4:-4 |"${1: -4:-4}
14 i=2; echo "-4:i=2 |"${1: -4:i}
15 i=-2; echo "-4:i=-2|"${1: -4:i}
16 i=-3; echo "-4:i=-3|"${1: -4:i}
17 i=-4; echo "-4:i=-4|"${1: -4:i}
23 echo "-9:-99 |"${1: -9:-99}