1	A
1	B
1	C
1	AA
1	AB
1	AC
1	BA
1	BB
1	BC
1	CA
1	CB
1	CC
1	AAA
1	AAB
1	AAC
1	ABA
1	ABB
1	ABC
1	ACA
1	ACB
1	ACC
1	BAA
1	BAB
1	BAC
1	BBA
1	BBB
1	BBC
1	BCA
1	BCB
1	BCC
1	CAA
1	CAB
1	CAC
1	CBA
1	CBB
1	CBC
1	CCA
1	CCB
1	CCC
