Array
(
    [0] => K102
    [2] => L005
    [9] => L007
    [1] => L008
    [5] => L009
    [7] => L011
    [4] => L072
    [3] => L450
    [6] => L451
    [8] => L452
    [10] => L453
)

All Sorts: Array
(
    [0] => K102
    [1] => L005
    [2] => L007
    [3] => L008
    [4] => L009
    [5] => L011
    [6] => L072
    [7] => L450
    [8] => L451
    [9] => L452
    [10] => L453
)

All Codes +  All Sorts: Array
(
    [K102] => K102
    [L005] => L005
    [L007] => L007
    [L008] => L008
    [L009] => L009
    [L011] => L011
    [L072] => L072
    [L450] => L450
    [L451] => L451
    [L452] => L452
    [L453] => L453
)

Current: 6
Max: 9
Back: -1
Next: 1
First: L072
Second: L450
Third: L451
Fourth: L452