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f3h7a1 g3h7 h3h7a i3h7a1 j3h7
4ti7 5ti7a 6ti7a1 7ti7 8ti7a
tkj7a ukj7a1 vkj7 wkj7a xkj7a1
ibk7a1 jbk7 kbk7a lbk7a1 mbk7