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diff --git a/figs/hard_box_1.pdf b/figs/hard_box_1.pdf
index 40e0c7b..3caae08 100644
--- a/figs/hard_box_1.pdf
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diff --git a/figs/hard_box_10.pdf b/figs/hard_box_10.pdf
index c861fdb..15b33aa 100644
--- a/figs/hard_box_10.pdf
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diff --git a/figs/hard_box_11.pdf b/figs/hard_box_11.pdf
index b03128a..c731953 100644
--- a/figs/hard_box_11.pdf
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diff --git a/figs/hard_box_12.pdf b/figs/hard_box_12.pdf
index 481e4be..7e077be 100644
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diff --git a/figs/hard_box_13.pdf b/figs/hard_box_13.pdf
index b101a47..421f200 100644
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diff --git a/figs/hard_box_14.pdf b/figs/hard_box_14.pdf
index 2a8139f..48346ca 100644
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diff --git a/figs/hard_box_15.pdf b/figs/hard_box_15.pdf
index 429fa6e..5c9f28b 100644
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diff --git a/figs/hard_box_16.pdf b/figs/hard_box_16.pdf
index 06811a1..08499db 100644
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index f565358..ad51d84 100644
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diff --git a/figs/hard_box_18.pdf b/figs/hard_box_18.pdf
index 9aed79b..38bd5dd 100644
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index a10b8b5..959fa2b 100644
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diff --git a/figs/hard_box_2.pdf b/figs/hard_box_2.pdf
index 1a10930..6623954 100644
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diff --git a/figs/hard_box_20.pdf b/figs/hard_box_20.pdf
index 66f9fca..c0bae82 100644
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diff --git a/figs/hard_box_28.pdf b/figs/hard_box_28.pdf
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diff --git a/figs/hard_box_4.pdf b/figs/hard_box_4.pdf
index 721bb19..318aced 100644
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diff --git a/figs/hard_box_40.pdf b/figs/hard_box_40.pdf
index aa32adf..7c31b94 100644
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index e580fb9..c9905de 100644
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diff --git a/figs/hard_box_46.pdf b/figs/hard_box_46.pdf
index b0f107b..f77a946 100644
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diff --git a/figs/hard_box_47.pdf b/figs/hard_box_47.pdf
index be93a23..cdbbc8e 100644
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diff --git a/figs/hard_box_48.pdf b/figs/hard_box_48.pdf
index 6fd0cec..195d8d4 100644
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diff --git a/figs/hard_box_5.pdf b/figs/hard_box_5.pdf
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diff --git a/figs/hard_box_50.pdf b/figs/hard_box_50.pdf
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diff --git a/figs/hard_box_6.pdf b/figs/hard_box_6.pdf
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diff --git a/figs/hard_box_7.pdf b/figs/hard_box_7.pdf
index 0544e4b..179c5b0 100644
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diff --git a/figs/hard_free_1.pdf b/figs/hard_free_1.pdf
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