fixes and lowercase

dev.txt

@@ -1,3 +1,3 @@
 version https://git-lfs.github.com/spec/v1
-oid sha256:d14c69a2850f39c945ea867e9594ab92bd7cca27a15066fa8d692be7c8c035e1
-size 51618097
+oid sha256:4171dd7d9d1a186c804f478cb2e9bc5e4bcfafb22e261c1ca12c75e01619cd2d
+size 51518813

test.txt

@@ -1,3 +1,3 @@
 version https://git-lfs.github.com/spec/v1
-oid sha256:33f7be2de1b3259a391d5224f37c6015128a8ab18dfb094c17a471055f323543
-size 56595754
+oid sha256:3f7c691393fb97e24bdbf477c62b6a1c2837e29232513dbe4b3d482c632f1bc6
+size 56476311

train.txt

@@ -1,3 +1,3 @@
 version https://git-lfs.github.com/spec/v1
-oid sha256:2ccb3c0f6e3b99276f0c39a0a93fcc7d5d50ff8bd5e50f6b1c537e3f21cabcd5
-size 533746211
+oid sha256:8c2f18c82eeceb08e2fa7d27d8d3b0f0faa13257e8602549f56134605aa65af0
+size 532747389

train_10m.txt

@@ -1,3 +1,3 @@
 version https://git-lfs.github.com/spec/v1
-oid sha256:6a419bfdaf93fd25c1b6f22af5368660009bf09e1540f62cf7a6037d6cf4fe56
-size 54214335
+oid sha256:3a0db432444052d092bd408fc5a14dfe2070d6f6be145439ecbe13a2c9832fd1
+size 54110743