Mahout recommend output only key value

Question

I making recommend item by mahout i see example they alway have a output like this

1    [234:5.0,347:5.0,237:5.0,47:5.0,282:5.0,275:5.0,88:5.0,515:5.0,514:5.0,121:5.0]
    2    [282:5.0,210:5.0,237:5.0,234:5.0,347:5.0,121:5.0,258:5.0,515:5.0,462:5.0,79:5.0]
    3    [284:5.0,285:4.828125,508:4.7543354,845:4.75,319:4.705128,124:4.7045455,150:4.6938777,311:4.6769233,248:4.65625,272:4.649266] 
    4    [690:5.0,12:5.0,234:5.0,275:5.0,121:5.0,255:5.0,237:5.0,895:5.0,282:5.0,117:5.0]

but my output

Key: 1: Value: 1
Key: 2: Value: 2
Key: 3: Value: 3
Key: 4: Value: 4
Key: 5: Value: 5
Key: 6: Value: 6
Key: 7: Value: 7
Key: 8: Value: 8
Key: 9: Value: 9

can anyone tell me why then have some solution? im using Mahout 0.13.0

this is my input

10,11,10
10,22,10
10,44,8
20,22,7
20,33,9
20,66,10
20,77,10
20,88,1
30,33,5
30,44,10
30,11,2
30,22,9
40,22,6
40,33,9
40,55,10
40,66,9
40,99,2
40,88,4