class="bi x0 y0 w1 h1"
class="bi x1 y1 w1 h2"
class="bi x2 y0 w2 h3"
class="bi x1 y1 w3 h4"
class="bi x1 y0 w4 h5"
class="bi x1 y1 w3 h6"
class="bi x1 y0 w3 h7"
class="bi x1 y1 w3 h8"
class="bi x3 y0 w5 h7"
class="bi x1 y1 w6 h5"
class="bi x1 y0 w3 h7"
class="bi x1 y1 w3 h9"
class="bi x3 y0 w7 h3"
class="bi x1 y1 w8 h6"
class="bi x3 y0 w7 h7"
class="bi x1 y1 w8 h6"
class="bi x3 y0 w7 ha"
class="bi x1 y1 w8 h6"
class="bi x3 y0 w7 h3"
class="bi x1 y1 w8 ha"
class="bi x1 y0 w3 h3"
class="bi x1 y1 w8 h8"
class="bi x3 y0 w9 h7"
class="bi x1 y1 w8 h8"
class="bi x3 y0 w9 h7"

Trích đoạn K) thu-t /t câu h1i: K% thu)t h2i và tr7 l9i: Cách ti7n hành:

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