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diff --git a/grc/data/grc_gnuradio/blocks/trellis_viterbi_combined_xx.xml b/grc/data/grc_gnuradio/blocks/trellis_viterbi_combined_xx.xml
new file mode 100644
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+++ b/grc/data/grc_gnuradio/blocks/trellis_viterbi_combined_xx.xml
@@ -0,0 +1,122 @@
+<?xml version="1.0"?>
+<!--
+###################################################
+##Trellis Viterbi Combined
+###################################################
+ -->
+<block>
+	<name>Trellis Viterbi Combo</name>
+	<key>trellis_viterbi_combined_xx</key>
+	<import>from gnuradio import trellis</import>
+	<make>trellis.viterbi_combined_$(type)$(out_type)(trellis.fsm($fsm_args), $block_size, $init_state, $final_state, $dim, $table, $metric_type)</make>
+	<param>
+		<name>Input Type</name>
+		<key>type</key>
+		<type>enum</type>
+		<option>
+			<name>Complex</name>
+			<key>c</key>
+			<opt>io:complex</opt>
+			<opt>table:complex_vector</opt>
+		</option>
+		<option>
+			<name>Float</name>
+			<key>f</key>
+			<opt>io:float</opt>
+			<opt>table:real_vector</opt>
+		</option>
+		<option>
+			<name>Int</name>
+			<key>i</key>
+			<opt>io:int</opt>
+			<opt>table:int_vector</opt>
+		</option>
+		<option>
+			<name>Short</name>
+			<key>s</key>
+			<opt>io:short</opt>
+			<opt>table:int_vector</opt>
+		</option>
+	</param>
+	<param>
+		<name>Output Type</name>
+		<key>out_type</key>
+		<type>enum</type>
+		<option>
+			<name>Int</name>
+			<key>i</key>
+			<opt>io:int</opt>
+		</option>
+		<option>
+			<name>Short</name>
+			<key>s</key>
+			<opt>io:short</opt>
+		</option>
+		<option>
+			<name>Byte</name>
+			<key>b</key>
+			<opt>io:byte</opt>
+		</option>
+	</param>
+	<param>
+		<name>FSM Args</name>
+		<key>fsm_args</key>
+		<type>raw</type>
+	</param>
+	<param>
+		<name>Block Size</name>
+		<key>block_size</key>
+		<type>int</type>
+	</param>
+	<param>
+		<name>Initial State</name>
+		<key>init_state</key>
+		<value>-1</value>
+		<type>int</type>
+	</param>
+	<param>
+		<name>Final State</name>
+		<key>final_state</key>
+		<value>-1</value>
+		<type>int</type>
+	</param>
+	<param>
+		<name>Dimensionality</name>
+		<key>dim</key>
+		<type>int</type>
+	</param>
+	<param>
+		<name>Constellation</name>
+		<key>table</key>
+		<type>$type.table</type>
+	</param>
+	<param>
+		<name>Metric Type</name>
+		<key>metric_type</key>
+		<type>enum</type>
+		<option>
+			<name>Euclidean</name>
+			<key>trellis.TRELLIS_EUCLIDEAN</key>
+		</option>
+		<option>
+			<name>Hard Symbol</name>
+			<key>trellis.TRELLIS_HARD_SYMBOL</key>
+		</option>
+		<option>
+			<name>Hard Bit</name>
+			<key>trellis.TRELLIS_HARD_BIT</key>
+		</option>
+	</param>
+	<sink>
+		<name>in</name>
+		<type>$type.io</type>
+	</sink>
+	<source>
+		<name>out</name>
+		<type>$out_type.io</type>
+	</source>
+	<doc>
+Viterbi Decoder combined with metric calculation. \
+The fsm arguments are passed directly to the trellis.fsm() constructor.
+	</doc>
+</block>