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;0,0,9,9,0,0,0,0;:
;-1,0,0,6,0,0,0,0;:
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;0,0,0,12,14,14,12,0;:
;-1,0,0,0,12,6,12,0;:
;0,0,0,0,14,14,0,0;:
;-1,0,0,0,0,14,0,0;: