100644 blob de1677b8de5920a1209169232b29a82552dee4db	Makefile
100644 blob 1165e3ae15a35dc662002205854368551fb87684	decimaldigit.go
100644 blob 393846e2e927a0cc926d7c35568711785e68de42	decimaldigit_test.go
100644 blob d7aa678c9d25e134630893ab5317a243a9a0881d	letter.go
100644 blob 8e4290d6dad5ffd06f22c7cb8353698914c81380	letter_test.go