①d{#blank#}1{#/blank#}     ②A{#blank#}2{#/blank#}    ③c{#blank#}3{#/blank#}    ④F{#blank#}4{#/blank#} 

① X{#blank#}1{#/blank#}② t{#blank#}2{#/blank#}③ k{#blank#}3{#/blank#}④ M{#blank#}4{#/blank#}⑤ g{#blank#}5{#/blank#}

⑥ I{#blank#}6{#/blank#}⑦ R{#blank#}7{#/blank#}⑧ v{#blank#}8{#/blank#}⑨ y{#blank#}9{#/blank#}⑩ q{#blank#}10{#/blank#}

{#blank#}1{#/blank#}

{#blank#}1{#/blank#}

e.g. B                                        d

D{#blank#}1{#/blank#}           b

G{#blank#}2{#/blank#}           h

H{#blank#}3{#/blank#}           g

Q{#blank#}4{#/blank#}           f

P{#blank#}5{#/blank#}           q