I would start with a leash.
1	I	I	PRON	PRP	Case=Nom|Number=Sing|Person=1|PronType=Prs	3	nsubj	3:nsubj	_
2	would	would	AUX	MD	VerbForm=Fin	3	aux	3:aux	_
3	start	start	VERB	VB	VerbForm=Inf	0	root	0:root	_
4	with	with	ADP	IN	_	6	case	6:case	_
5	a	a	DET	DT	Definite=Ind|PronType=Art	6	det	6:det	_
6	leash	leash	NOUN	NN	Number=Sing	3	obl	3:obl:with	SpaceAfter=No
7	.	.	PUNCT	.	_	3	punct	3:punct	_
