We've been a couple of mutts, who've bitten off a bigger bit than they can chew.
( We ( ( 've ( been ( ( a couple ) ( of ( ( mutts , ) ( who ( 've ( ( ( bitten off ) ( a ( bigger bit ) ) ) ( than ( they ( can chew ) ) ) ) ) ) ) ) ) ) ) . ) )
(ROOT (S (NP (PRP We)) (VP (VBP 've) (VP (VBN been) (NP (NP (DT a) (NN couple)) (PP (IN of) (NP (NP (NNS mutts)) (, ,) (SBAR (WHNP (WP who)) (S (VP (VBP 've) (VP (VBN bitten) (PRT (RP off)) (NP (DT a) (JJR bigger) (NN bit)) (SBAR (IN than) (S (NP (PRP they)) (VP (MD can) (VP (VB chew)))))))))))))) (. .)))
We've gotten ourselves into something bigger than we can handle.
( We ( ( 've ( ( ( gotten ourselves ) ( into something ) ) ( bigger ( than ( we ( can handle ) ) ) ) ) ) . ) )
(ROOT (S (NP (PRP We)) (VP (VBP 've) (VP (VBN gotten) (NP (PRP ourselves)) (PP (IN into) (NP (NN something))) (S (ADJP (JJR bigger) (SBAR (IN than) (S (NP (PRP we)) (VP (MD can) (VP (VB handle))))))))) (. .)))