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Terminal: run. Derivation Graphs: (left-to-right) compact / full; (top-down) full / compact.

Help: blue = parse inside. Abbr.: WS: Workspace; Initial WS: initial heads for Merge after LEX lookup.

WS n, n = 1,2,... for intermediate stages after Initial WS. Final WS: when WS items converge on a single SO.
Bracketing: {...} (Merge). {...} (FormSet). At Spellout, {...} indicates free word order. [word] indicates word is optionally present.
Head Hd_{selection/features}, e.g. p_θ = predicate head p that seeks a θ-relevant (θR) IA from the WS. p_θ is a θ-seeker (θS).
v_see:θ:pst = head v has complement see, a θR EA from the WS and TNS. v is also a θS.
INFL seeks θR from its complement (not the WS).
Complementizer C comes in different flavors wrt. Force, .e.g. declarative C, interrogative C_Q and relative clause head C_rel.
Features, e.g. TNS pres/pst or DET the/a (shorthand for a bundle of semantic features).
Note: φ-features, e.g. 1sg, appear only at Spellout. Some words do not project, turn into features, e.g. determiners.

Words: John met Bill

Initial WS 1: Bill meet_θ v_meet:_θ:_pst INFL_v John

WS 1: {meet_θ, Bill} v_meet:_θ:_pst INFL_v John

WS 2: {v_meet:_θ:_pst, {meet_θ, Bill}} INFL_v John

WS 3: {John, {v_meet:_θ:_pst, {meet_θ, Bill}}} INFL_v

WS 4: {INFL_v, {John, {v_meet:_θ:_pst, {meet_θ, Bill}}}}

Final WS: {C, {INFL_v, {John, {v_meet:_θ:_pst, {meet_θ, Bill}}}}}

INT/EXT: {C, {INFL_v, {John, {v_meet:_θ:_pst, {meet_θ, Bill}}}}}

EXT: John 3sg pst meet Bill

Spellout: John met Bill

Parse found: John 3sg pst meet Bill

WS 1: {meet_θ, John} Bill v_meet:_θ:_pst INFL_v

WS 2: {v_meet:_θ:_pst, {meet_θ, John}} Bill INFL_v

WS 3: {Bill, {v_meet:_θ:_pst, {meet_θ, John}}} INFL_v

WS 4: {INFL_v, {Bill, {v_meet:_θ:_pst, {meet_θ, John}}}}

Final WS: {C, {INFL_v, {Bill, {v_meet:_θ:_pst, {meet_θ, John}}}}}

INT/EXT: {C, {INFL_v, {Bill, {v_meet:_θ:_pst, {meet_θ, John}}}}}

EXT: Bill 3sg pst meet John

Spellout: Bill met John

Blocked: inconsistent with input!

WS 1: {Bill, John} meet_θ v_meet:_θ:_pst INFL_v

WS 2: {meet_θ, {Bill, John}} v_meet:_θ:_pst INFL_v

WS 3: {v_meet:_θ:_pst, {meet_θ, {Bill, John}}} INFL_v

WS 4: {{Bill, John}, {v_meet:_θ:_pst, {meet_θ, {Bill, John}}}} INFL_v

WS 5: {INFL_v, {{Bill, John}, {v_meet:_θ:_pst, {meet_θ, {Bill, John}}}}}

Final WS: {C, {INFL_v, {{Bill, John}, {v_meet:_θ:_pst, {meet_θ, {Bill, John}}}}}}

INT/EXT: {C, {INFL_v, {{Bill, John}, {v_meet:_θ:_pst, {meet_θ, {Bill, John}}}}}}

EXT: {Bill,[and],John} 3sg pst meet {Bill,[and],John}

Blocked: EXT inconsistent!

Blocked: inconsistent with input!